Shuttleless loom



May\12, 1931. R. @..MoYA

sHUTTLELE-ss Loom Filed Nov. 2:2.v 1927 2 sheets-sheet 2 Patented May 12, 1931 y UNITED STATES RAMON GARCIA MOYA., 0F CORNET-JA DE 12.1.0.'BRJEKErA'l,l SPAIN snU'r'rLELEss Loom Application tiled November 22, 1927,- Serial No. 235,088, and in Spain November 24, 1926.

This invention relates to shuttleless looms of the type described in my co-pending applicationSerial No. 256,349, liled February 23, 1928, or other similar types in` which the weft passes from a bobbin mounted upon the frame of the loom, on one side of the latter, and is inserted into the shed by means of a weft carrying arm given a to and fro movement, which arm passes the weft double from one side of the cloth to the other and is withdrawn after the loop or bend in the double weft has been retained by a suitable mechanism. In this type of loom the bestv means for retaining the weft inthe selvedge opposite the one -at which it is inserted, is to dispose at this part of the loom, as already indicated in the said application, a mechanism provided with a bobbin 4similar to the central bobbin in sewing machines, by which mechanism the thread from this bobbinl itself is made `lto pass through the loop or.

nism of this kind which presents the advantages of being simple in construction and operating with great accuracy. and perfection,

leaving the selvedge perfectly formed.

In the accompanying drawings are illustratedv the necessary parts of a shuttleless loom provided with the mechanism forming thesubject of this invention; s

F ig. lis aview from above of the mechanism forming the selvedge and'of the lend of the weft carrying arm when it reaches the end of its travel, that is to say at the moment when the selvedge formingy mechanism catches the weft thread.

Fig. 2 is a vertical section taken along ythe line II-II in Fig. 1. l

Fig. 3 is a View from above which is similar to 1, but in the position for which ,the weft carrying arrnfcommences its return stroke and the selvedge forming mechanism hasA rotated through 180 and'is passing the thread from the bobbin through the loop in the weft thread.

Fig. 4 is a vertical section taken along the line IV-IV in Fig. 3.

In Figs. 1 to 4,' 1 indicates in general the selvedge forming mechanism vwhich is mounted at the end of a bar 2 parallel to the breast beamof the loom, which'bar also carries the temples for maintaining the convenient width of the cloth. 3 is the weft carrying arm which inserts the weft 4 into the shed, which arm is rovided at its end with a hole 5 through which passes constantly the weft thread and comprises immediately behind this hole a recess 6. In this recess 6 the weft thread 4 is completely free and consequently in a favourable vposition to be caught by the selvedge forming mechanism.

The' selvedge forming mechanism comprises a hollow box or drum 7 which is adapted to turn freely in the frame 1 of thel mechanism and this drum 7 comprises at'each side flanges 8 and externally to one of these flanges a toothed crown 9'which engages with a wheel 10 mounted'upon the end of a shaft 11 which Ais given a suitable movement'of rotation by means of a sprocket wheel 12 vand a chain drive. In the interiorof the rotatable drum 7 is houseda bobbin 13 prol vided -with a certain quantity of thread which is that which has to become entwined with the turn of loop in the weft 4.

The flange 8 of the drum 7 comprises at a 'suit-able point on its circumference, an extension or tooth 14 adjacent to a notch 15 which extends so asto vform between the teeth of the toothed crown 9 a small cavity or channel 16 which extends over the whole width of the rotatable drum 7 Aand in which can enter theweft thread 4 in such a way that when the weft thread is lodged in this channel the drum 7 can turn compelling the weft thread to pass betweenthe drum and the frame or support 1. 'This frame 1 also comprises an open part 17 coinciding with the weft carrying arm 3 so that the weft thread can pass through the notch 15 in the channel 16.

`The toothed wheel 10 and consequently the drum 7 rotate continuously, but their movement issynchronized in such -a way with the general movement of the loomand consequently with the movement of the weft carrying arm 3 that, when this arm reaches 5 the end of its travel, that 'is to say is in the vposition shown in Fig. 1, the tooth or extension 14 on the drum 7 arrives in the position shown in Fig. 2 and is rotated with the drum 7 in the direction of the arrow 18 so that 10 the tooth 14 is introduced into the notch 6 in the weft carrying arm and catches the front end of the weft 4 compelling it to enter the notch'15 and the channel 16.

When the weft thread has arrived in this position,`the movement of rotation of the drum 7 continuing, this weft thread turns around the drum 7, as shown in Figs. 3 and 4, while the weft carrying arm is withdrawn, and as a result of this rotation of the weft thread 4 about the bobbin 13, the thread 19 of the latter is passed through the turn or loop in the weft 4. ,Y

The movement of 4rotation of the drum in the direction of the arrow 18 continuing,

a moment arrives when the weft thread 4 escapes from the drum 7 and then the movement of the veft carrying arm 3 in the last sta e of its backward movement, pulls this we t thread, the thread thus remaining conveniently held in the shed and arranged for the healds of the loom to operate and produce the counter shed, and the said operations can then take place again.

I claim In `a shuttleless loom of the type described, in which the weft is inserted by a reciprocating weft carrying arm the combination of aselvedge forming mechanism comprising a continuouslyv rotating drum,

said drum having a toothed crown, a toothed pinion, meshing with the toothed crown of said drum, a thread bobbin in said drum, a weft engaging finger on the drum projecting tangentially from the drum and adapted to catch the loop of the weft inserted by the weft carrying arm and a channel in said drum to receive this` weft thread and carry said thread around the bobloin, said drum being rotated in timed relation with respect to the movement of the weft carrying arm, whereby when said weft-carrying armsreaches 'the end of its travel the tooth of the drum' catches the weft thread carried by the arm.

In testimony whereof I have signed my name to this specification.

RAMON GARCIA MOYA. 

